Home / 281,254.14-388,130.85-153,930.42

Finding the Fourth Proportional to 281,254.14, 388,130.85 and 153,930.42

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Solution

The fourth proportional to 281,254.14, 388,130.85 and 153,930.42 is: 212,424.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,254.14 : 388,130.85 = 153,930.42 : x
  2. Step 2: Convert to fraction form
    281,254.14/388,130.85 = 153,930.42/x
  3. Step 3: Cross multiply
    281,254.14x = 388,130.85 × 153,930.42
  4. Step 4: Simplify right side
    281,254.14x = 59,745,144,755.46
  5. Step 5: Solve for x
    x = 59,745,144,755.46/281,254.14
  6. Step 6: Final answer
    x = 212,424.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.